The device is new, working perfect and was never been  used.
"Device on sale with big discount because it bought without WARRANTY, so keep it in mind before 
Note also, the adapter is for 220V and the socket is EU.
Please ask anything if you have a questions before the order.

DSR-500
  • 2 10/100/1000 Mbps WAN Ports
  • 4 10/100/1000 Mbps LAN Ports

  • USB 2.0
    • 1 
  • Console
    • 1 RJ-45

    • INTERNET CONNECTION TYPE:

      • Static/Dynamic IP
      • PPPoE/L2TP/PPTP
      • Multiple PPPoE

      FIREWALL SYSTEM:

      • Static Route
      • Dynamic DNS
        • RIPv1, RIPv2, OSPF (DSR-500AC only)
      • Inter-VLAN Route
      • NAT, PAT
      • Web Content Filtering
        • Static URL, Keywords, Dynamic
      • Intrusion Prevention systems (IPS)
        • Signature package included in Firmware (DSR-250/250N/ 500/500AC)

      NETWORKING:

      • DHCP Server/Client
      • DHCP Relay
      • VLAN (Port-Based)
      • IP Multicast
        • IGMP Proxy
      • IPv6

      VIRTUAL PRIVATE NETWORK (VPN):

      • VPN Tunnels (Total)
        • 95 (DSR-500/500AC)
      • IPSec Tunnels
        • 35 (DSR-500/500AC)
      • SSL VPN Tunnels
        • 10 (DSR-500/500AC)
      • PPTP/L2TP Clients
        • 25 (DSR-500/500AC)
      • GRE
        • 15 (DSR-500/500AC)
      • Encryption Methods
        • DES, 3DES, AES, Twofish, Blowfish, CAST-128, NULL
      • SSL Encryption Methods
        • RC4-128, 3DES, AES
      • IPSec/PPTP/L2TP Server
      • IPSec NAT Traversal
      • Dead Peer Detection
      • IP Encapsulating Security Payload (ESP)
      • IP Authentication Header (AH)
      • VPN Tunnel Keep Alive
      • Hub and Spoke

      BANDWIDTH MANAGEMENT:

      • Max. Bandwidth Control
      • Priority Bandwidth Control
        • Port-Based QoS, 3 Classes

      MANAGEMENT:

      • Web-based User Interface
        • HTTP, HTTPS
      • Command Line
      • SNMP
        • v1, v2c, v3

      PHYSICAL & ENVIRONMENTAL:

      Power Supply

      • DSR-500
        • Internal Power Supply Unit
        • Input: 100-240 VAC, 50/60Hz
        • Output: DC 12V, 2.5A
      • Max. Power Consumption
        • 13.1W (DSR-500AC)
      • Dimensions (L x W x H)
        • 7.09 x x 11.02 x 1.73 in (180 x 280 x 44 mm) (DSR-500/500AC)
      • Operation Temperature
        • 32 to 104 °F (0 to 40 °C)
      • Storage Temperature
        • -4 to 158 °F (-20 to 70 °C)
      • Operation Humidity
        • 5% to 95% Non-condensing
      • EMI/EMC
        • FCC Class B, CE Class B, C-Tick, IC
      • Safety


        • cUL, LVD (EN60950-1)Overview


        • The D-Link DSR Series VPN Routers provide secure, high-performance networking solutions to address the growing needs of small and medium businesses. The DSR series routers offer unparalleled performance and security to ensure employees can access their files securly from anywhere they are working.

          Comprehensive Management Capabilities

          The DSR-500 and 1000 VPN Routers include dual WAN Gigabit Ethernet ports to provide high availability for your WAN or Internet connections. Traffic can be load-balanced across links with Outbound Load Balancing, increasing the performance and availability of business applications. The secondary WAN port can also be used to create a DMZ, isolating servers from your LAN.

          Web Authentication Capabilities

          Captive Portal allows employees and guest users to be easily authenticated and authorized by accessing a customized landing page. Users can be authenticated by a local database, RADIUS, LDAP, Microsoft Windows Active Directory, NT Domain and POP3 server. A maximum of four servers can be configured at any one time.

          Complete and Robust VPN Features

          A fully featured virtual private network (VPN) provides your mobile workers and branch offices with a secure link to your network. The DSR series routers are capable of Secure Sockets Layer (SSL) VPN tunnels, as well as Generic Routing Encapsulation (GRE) tunnels, empowering your mobile users by providing remote access to a central corporate database. Site-to-site VPN tunnels use IP Security (IPSec) Protocol, Point-to-Point Tunneling Protocol (PPTP), or Layer 2 Tunneling Protocol (L2TP) to facilitate branch office connectivity through encrypted virtual links. OpenVPN allows mobile users to connect to the corporate intranet via encrypted links with their PC, laptops, or mobile devices.

          Static and Dynamic Web Content Filtering

          The DSR series also provides a web content filtering feature to help administrators monitor, manage, and control employee Internet usage. Static web content filtering helps to remove malicious objects such as Java applets, ActiveX, and cookies, or to block URLs by keyword. Dynamic Web Content Filtering, which requires a license subscription, allows administrators to filter content from a list of categories. Multiple global index servers, with millions of URLs and real-time website data, enhance performance and maximize service availability. Dynamic Web Content Filtering trial period is free for the first three months.